Leviton 1221-7PC 20-Amp, 277 Volt, Toggle Pilot Light, Neutral Single-Pole AC Quiet Switch, Extra Heavy Duty Grade, Self Grounding, Clear Pilot Light and Lighted Handle Switches Provide Top Performance in Punishing Industrial Applications Lighted Handle Illuminated When Load is OFF. Pilot Light Toggle Illuminated When Load is ON 127 and 277V Versions in Single Pole and 3-Way Fully Enclosed Switch Mechanism in Rugged Housing for Strength, Track and Arc Resistance Self-Grounding Clip (Self-Grounding When Used with a Grounded Metal Wall box)